Hello, I have calculated the answers for questions 8 and 9. I am confused as to which option I should choose because I think I have to choose the rounded answer. And for #11, I am not sure how to approach the question, what steps should I take to complete the question?

Short Answer [10 A] 11. A physics student with mass of 55 kg with an initial velocity of 1.5 m/s forwards glides along the ice and comes to a complete over a distance of 56 meters. Draw a FBD of the physics student and calculate the friction and normal force of this physics student.8. A 65 kg runner changes his velocity from 4.2 m/s [S] to 7.5 m/s [S] in 1.0 s. What is the net force acting on the runner? a. 210 N c. 230 N b. 240 N d. 220 N9. The following object has a mass of 5.2 kg. Determine the acceleration of the object. 32 N 17 N a. 11 m/s' [left] b. 10 m/s' [left] 43N C. 12 m/s' [ left] d. 13 m/s' [left]